C

C

D

A

A

D

A

A

B

B

A

A

D

A

C

C

A

A

A

C

A

A

D

A

C

A

A

C

C

C

C

C

C

A

B

B

C

D

C

B

C

D

B

C

E

E

B

B

B

D

D

C